ANOVA is a technique that permits the comparison of the equality of means for multiple populations. Thus, 3 means could be compared and a determination of whether or not one of the means is significantly different from others can be made. This technique is extremely useful, but, as is always the case, the application requires a firm understanding of models assumptions. Consider the following scenario. A meticulously determined random sample of 200 observations is taken from a very large population. This data divides into 4 groups or factor levels, and a numerical measure for each observation is recorded. The population distribution of the measure appears to be slightly skewed positive. The 4 groups have the following number of observations 30, 100, 15 and 55. Which of the following statements leads to the greatest concern in using ANOVA as an analytical technique.
a. Unequal sample sizes among groups can seriously affect the power of the test.
b. Slightly skewed positive distribution of population measures seriously affect the power of the test.
c. In this scenario, I should be concerned about whether the data has been gathered in a biased fashion.
d. Four is not a sufficient number of groups into which to divide the data.

Answers

Answer 1

Answer:

c. In this scenario, I should be concerned about whether the data has been gathered in a biased fashion.

Explanation:

ANOVA is a statistical method which separates observed variance data into different components to use. One way ANOVA is used for three or more groups of data. The greatest concern in ANOVA is that the data gathered should not be biased.


Related Questions

When you are getting too cold,
goosebumps and shivering leads to
heating of your body. Which type of
feedback loop is this?
А
a negative feedback loop
3
a positive feedback loop

Answers

Answer:

negative

Explanation:

This shows a cell in a

A hypertonic
B isotonic
C hypotonic

Answers

[tex]\huge \bf༆ Answer ༄[/tex]

The Correct choice is ~

A. hypertonic solution

In a hypertonic solution, the concentration of liquid is higher in the solution as compared to that of concentration in the cytoplasm of cell, Therefore Osmosis takes place, causing the liquid present in the solution to move in the cell, and hence inflammation/ swelling occurs.

I hope it helped ~

PLEASE HELP LIKE I REALLY NEED HELP

Which of the following distinguishes how the farm bill in its current form differs from the Agricultural Adjustment Act of 1933?


The farm bill provides payments to farmers through indirect means only.

The farm bill allows set funding to purchase farm surplus for government use.


The farm bill pays farmers to grow crops, rather than to not grow them.


The farm bill includes charitable aid to those living in poverty.

Answers

Answer:

The Farm bill includes charitable aid for those living in Poverty.

Explanation:

The farm bill is a package of legislation passed roughly once every five years that has a tremendous impact on farming livelihoods, how food is grown, and what kinds of foods are grown. Covering programs ranging from crop insurance for farmers to healthy food access for low-income families, from beginning farmer training to support for sustainable farming practices, the farm bill sets the stage for our food and farm systems. As a leading advocate for family farmers and sustainable agriculture, it’s our job to make sure that this important bill is good for farmers, consumers, and for the natural environment.

Explanation:

Which of the following distinguishes how the farm bill in its current form differs from the Agricultural Adjustment Act of 1933?

➠➢ ➡The farm bill includes charitable aid to those living in poverty.

What makes up the majority of the solid (non-pore) portion of the soil?

Answers

Answer:

In general, soil contains 40-45% inorganic matter, 5% organic matter, 25% water, and 25% air. In order to sustain plant life, the proper mix of air, water, minerals, and organic material is required. Humus, the organic material in soil, is composed of microorganisms (dead and alive) and decaying plants.

Explanation:

How does freshwater enter the aquifer ?

Answers

Answer:

some sort of water system, (a river/groundwater/purification plant ect.)

Explanation:

Why do organisms perform fermentation?

Answers

Answer: Because muscle cells cannot get oxygen fast enough to meet their energy needs through aerobic respiration.

Answer: Because muscle cells cannot get oxygen fast enough.

5. a. What technology produced the results illustrated here, and what is this
technology used for? (1 point)
Think about the methods used to analyze DNA.

Answers

The technology that was used to produce the results illustrated in the image is gel electrophoresis and it is used for separating deoxyribonucleic acid (DNA) fragments.

Gel electrophoresis can be defined as a technology that is used in the laboratory for the separation of mixtures of deoxyribonucleic acid (DNA), ribonucleic acid (RNA) or other macromolecules such as proteins based on molecular size and charge.

In gel electrophoresis, an electric current is applied to the deoxyribonucleic acid (DNA) samples so as to create fragments that can be used to compare the various samples of deoxyribonucleic acid (DNA).

The steps involved in gel electrophoresis include the following:

Extraction of deoxyribonucleic acid (DNA).DNA isolation and amplification.Addition of deoxyribonucleic acid (DNA) to the gel wells.Application of an electric current to the gel.The separation of DNA bands based on molecular size and charge.Deoxyribonucleic acid (DNA) bands are stained.

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Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).

E

x-Y

4

F

X-8

B

G

If AABC and AGEF are congruent, the value of x is___

and the value of y is____

Answers

Answer:

Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s). Consider the equation below. -2(bx-5)=16The value of x in terms of b is The value of x when b is 3 is

Which of the following models shows the flow of energy in a woodland ecosystem? Select the two correct answers A.sun → tree → caterpillar → bird
B.sun → caterpillar → bird → hawk
C.sun → tree → grass → mouse
D.sun → grass → mouse → owl
E.sun → hawk → bird → caterpillar

Answers

Answer:

C and D

Explanation:

Energy flow is the transference of energy through all the links composing the trophic web. The correct options areA and D.  A) sun → tree → caterpillar → bird ///  D) sun → grass → mouse → owl.

What is the flow of energy in trophic webs?

Is the transference of energy through a series of organisms involved in the trophic web.

During energy flow, every link in the trophic web takes energy by feeding on the preceding one and provides energy when becomes food for the next link.

Autotroph organisms take energy from the sun to synthesize organic matter from inorganic matter.

Primary consumers take energy from producers.

Secondary consumers take energy from primary consumers.

And so on, until finally, decomposers take energy decomposing matter.

Accordig to this information, the two correct answers are options A and D.

            Producer        Primary consumer    Secondary consumer

A.  sun    → tree        →        caterpillar         →              bird

D.   sun   → grass      →            mouse          →               owl

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.Marcus has $15.00 to spend on fruit. He buys 3 mangoes and spends the rest of the money on grapes. The store charges $0.75 for each mango and $2.50 per pound for grapes

Answers

Answer:

Explanation:

after he spent money on mangoes it was a total of 12.75

so he bought like 5lb of grapes

scientists often test their hypotheses with controlled experiments. which of these is a rule for conducting a controlled experiment?
a. change at least two variables at a time
b. keep all variables constant
c. change as many variables as possible
d. change only one variable at a time

Answers

Changing only one variable at a time is a  rule for conducting a controlled

experiment.

Controlled experiment involves the use of dependent and independent

variables . Changes in the independent variable brings about a

corresponding change in the dependent variable which is then recorded.

It is however important to note that changing more than only one variable at

a time won't accurately determine if the changes in the results were as a

result of one cause. This is why only one variable has to be changed at a

time.

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How do you think scientists figure out the life cycle of a star

Answers

Answer:

space

Explanation:

they figured it out going to space and since a star is a small peice of the sun they can't touch it it's impossible without getting heat burns or dying so they ither observe a star using a telescope or went to space for days

Explain what TWO forces cause Earth’s water to bulge?

Answers

Answer:

Gravity and inertia act in opposition on the Earth's oceans, creating tidal bulges on opposite sites of the planet. On the “near” side of the Earth (the side facing the moon), the gravitational force of the moon pulls the ocean's waters toward it, creating one bulge.

_______________ are sounds the auditory apparatus makes.

vibrations

otoacoustic emissions

cochlear action potentials

none of the above

Answers

A) Vibrations


Sounds vibrate the eardrum

nvmhhudd<uldjddhssh?_______

Answers

Answer: nvrmndllhddy = wldjddpshh

A single base substitution mutation is likely to have a less deleterious effect when the base change exhibits which of the following results

Answers

A single base substitution mutation will be the least likely to cause a deleterious effect when the base change produces the same amino acid as the original.

What is a silent mutation?This scenario is what we call a silent mutation. What this means is that the mutation is almost undetectable due to its not affecting the protein that it will help to form.This is possible thanks to how the genetic code operates, different codons are able to code for the same amino acid.Therefore, there are mutations that do not affect the amino acid or the protein.

Therefore, we can confirm that a mutation will have no negative effects if it is a silent mutation, meaning that the substitution of a base pair happens to code for the same amino acid as the original.

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please help meeèe I really need urs help ​

Answers

Explanation:

Science and technology help each other advance. Scientific knowledge is used to create new technologies. New technologies often allow scientists to explore nature in different ways and make new discoveries. Examples of technologies that have helped science advance include the telescope and microscope.

PLEASE HELP ME WILL MARK BRAINLIEST LIKE GIVE ME THE REAL ANSWER
Which of the following distinguishes how options differ from futures In commodities markets?


Options are used to speculate against good pricing.


Options cannot be applied beyond a set volume of a good.


Options involve prices for goods set at the current time.


Options do not involve a requirement for a good to be purchased.

Answers

Answer:

I believe it is C I am not 100% though sorry if its wrong

Options and futures contracts are both derivatives, created mostly for hedging purposes. The key difference between them is that futures obligate each party to buy or sell, while options give the holder the right (not the obligation) to buy or sell.

Which types of organisms developed first due to the early
environmental conditions on Earth?
A. prokaryotic and aerobic
B. prokaryotic and anaerobic
C. eukaryotic and aerobic
D. eukaryotic and anaerobic

Answers

The answer is prokaryotic and anaerobic

Sea corals live exclusively in the ocean and are radially symmetrical. They have microscopic stinging barbs that shoot out to immobilize their prey. This allows corals to hunt even while they are stuck to the ocean floor.

What animal phylum do corals belong in?

chordates
mollusks
cnidarians
annelids

Answers

Answer:

phylum Cnidaria

Corals, anemones and jellies are related and all classified in the phylum Cnidaria or “stinging needles.” The animals in this group are aquatic, possess stinging cells within their tissues and have a body plan characterized by radial symmetry, which allows all parts of their bodies to be equally receptive and ...

Explanation:

Answer:

A. chordates

Explanation:

Which of the following best describes daily temperatures in deserts? a. hot during the day and cold at night b. hot during the day and warm at night c. cool during the day and very cold at night d. they depend upon the type of desert and its location Please select the best answer from the choices provided A B C D

Answers

Letter "A" would be correct

Answer:

I think it's D..

Explanation:

There are different types of deserts.

Differences between bacteria and plants

Answers

Answer:

Main Difference – Plant Cell vs Bacterial Cell

The plant cell is a eukaryotic cell whereas the bacterial cell is a prokaryotic cell. The main difference between plant cell and bacterial cell is that plant cell contains membrane-bound organelles whereas bacterial cell lacks membrane-bound organelles.

Explanation:

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Which codon is the code for the amino acid valine (Val)?

Answers

Answer: A. GUC

Explanation:

Looking at the codon chart, we see that on the lower left corner (where first base in codon is G) the whole section matches to amino acid valine. Therefore, GUU, GUC, GUA, and GUG are all correct answers, but since GUC is the only correct choice in the four choices given, GUC is the answer to this question.

how to make soap without the use of oil.​

Answers

Answer:

its impossible

Explanation:

You can use lard as a substitute or just don’t put oil in it. ‍♀️


3. Cell membranes are made from
that are aligned to form hydrophobic and hydrophilic regions.
O A. fatty acids
O B. carbohydrates
O C. lipids
D. phospholipids

Answers

Answer:

c. ilpidos

Explanation:

Why Should We Add Crickets In Our School Lunches?
Introduction

Answers

Answer:

Because it is rich in Protein and also gross

Explanation:

is a proton positive or negative or electron

Answers

Answer:

a proton is positive

Explanation:

Answer:

A proton is a positive charge.

An electron is a negative charge.

A Neutron is a neutral charge.

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Explain how one change in the Earth's biosphere can
cause changes in other Earth systems.

Answers

Answer:

interaction in the Earth's biosphere cause the change in other Earth system as the biosphere and atmosphere are dynamic, constantly reflecting these interaction. and Biosphere-Atmosphere Interactions focuses on the sources and sinks of greenhouse gases (GHGs), air pollutants, particulate matter, water, and energy between the Earth's surface and the atmosphere.

The Earth's biosphere is closely interconnected with other Earth systems, such as the hydrosphere (water), atmosphere (air), and geosphere (land). Changes in one part of the Earth's biosphere can have significant impacts on other Earth systems, and vice versa

What is a biosphere?

Biosphere means interactions with each other and their physical environment.

For example, changes in land use, such as deforestation or urbanization, can affect the Earth's water cycle and climate. Deforestation, for example, can lead to increased runoff and erosion, which can alter the availability and quality of water in an ecosystem. Deforestation can also lead to an increase in atmospheric carbon dioxide, as trees and other vegetation absorb and store carbon dioxide during photosynthesis. This can contribute to global warming and climate change.

Similarly, changes in the Earth's climate, such as an increase in temperature or a change in rainfall patterns, can affect the biosphere. Warmer temperatures can lead to the range expansion of certain species and the loss of habitat for others. Changes in rainfall patterns can affect the availability of water for plants and animals, which can lead to changes in the distribution and abundance of species in an ecosystem.

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In transcription what makes mRNA molecule by attaching free floating rna nucleotides together ???

Answers

Answer:

An mRNA transcript is made by an enzyme called RNA polymerase II

Explanation:

come up with a question for an investigation that can be done at a forest preserve (make sure to include an independent and dependent variable)

Answers

Answer:

What are the most effective new chemical treatments of various invasive species?

Explanation:

independent variable: chemical treatments

dependent variable: the type of species

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